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Finding the Fourth Proportional to 609,531.80, 914,297.70 and 519,330.20

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Solution

The fourth proportional to 609,531.80, 914,297.70 and 519,330.20 is: 778,995.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,531.80 : 914,297.70 = 519,330.20 : x
  2. Step 2: Convert to fraction form
    609,531.80/914,297.70 = 519,330.20/x
  3. Step 3: Cross multiply
    609,531.80x = 914,297.70 × 519,330.20
  4. Step 4: Simplify right side
    609,531.80x = 474,822,407,400.54
  5. Step 5: Solve for x
    x = 474,822,407,400.54/609,531.80
  6. Step 6: Final answer
    x = 778,995.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.